Related Clues:

• One of Merv's shows, informally
• Roulette device
• See 38 Across
• What a driver takes
• Move in a circle
• Unicycle part
• Turner on a game show
• Wagon roller
• Prop on 'The Price Is Right'
• Revolutionary invention
• A unicycle has one
• Pulley component
• Prop on "The Price Is Right"
• Steering device
• Early invention